<template>
  <div class="app-container">
    <div class="el-toolbar">
      <div class="el-toolbar-body" style="justify-content: flex-start;">
        <a href="http://localhost:8202/admin/cmn/dict/exportData" target="_blank">
          <el-button type="text">
            <i class="fa fa-plus" />
            导出
          </el-button>
        </a>

        <el-button @click="exportAxiosData">导出axios</el-button>
        <el-button type="text" @click="importData">
          <i class="fa fa-plus" />
          导入
        </el-button>
      </div>
    </div>

    <el-table
      :data="list"
      style="width: 100%"
      row-key="id"
      border
      lazy
      :load="getChildrens"
      :tree-props="{ children: 'children', hasChildren: 'hasChildren' }"
    >
      <el-table-column label="名称" width="230" align="left">
        <template slot-scope="scope">
          <span>{{ scope.row.name }}</span>
        </template>
      </el-table-column>
      <el-table-column label="编码" width="220">
        <template slot-scope="{ row }">
          {{ row.dictCode }}
        </template>
      </el-table-column>
      <el-table-column label="值" width="230" align="left">
        <template slot-scope="scope">
          <span>{{ scope.row.value }}</span>
        </template>
      </el-table-column>

      <el-table-column label="创建时间" align="center">
        <template slot-scope="scope">
          <span>{{ scope.row.createTime }}</span>
        </template>
      </el-table-column>
    </el-table>

    <el-dialog :visible.sync="dialogImportVisible" title="导入" width="480px">
      <el-form label-position="right" label-width="170px">
        <el-form-item label="文件">
          <el-upload :multiple="false" :on-success="onUploadSuccess" :action="'/dictProxy/admin/cmn/dict/importData'" class="upload-demo">
            <el-button size="small" type="primary">点击上传</el-button>
            <div slot="tip" class="el-upload__tip">
              只能上传excel文件，且不超过500kb
            </div>
          </el-upload>
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button @click="dialogImportVisible = false">
          取消
        </el-button>
      </div>
    </el-dialog>
  </div>
</template>
<script>
import dict from '@/api/dict';
import axios from 'axios';

export default {
  data() {
    return {
      dialogImportVisible: false, //设置弹框是否弹出
      list: [] //数据字典列表数组
    };
  },
  created() {
    this.getDictList(1);
  },

  methods: {
    // 导入数据字典
    importData() {
      this.dialogImportVisible = true;
    },
    //上传成功调用
    onUploadSuccess() {
      //关闭弹框
      this.dialogImportVisible = false;
      //刷新页面
      this.getDictList(1);
    },
    //导出数据字典
    exportAxiosData() {
      // const aa = await dict.exportData();  // 【此接口为后端处理的跨域，无法处理】
      // console.log(aa);
      // dict.exportData().then(response => {
      //   console.log(99, response);
      // });

      axios({
        method: 'get',
        url: '/dictProxy/admin/cmn/dict/exportData',
        responseType: 'blob'
      }).then(res => {
        // console.log(888, res);
        // debugger; // res.data === blob

        const link = document.createElement('a');
        const blob = new Blob([res.data], { type: 'application/vnd.ms-excel' });
        link.style.display = 'none';
        link.href = URL.createObjectURL(blob);
        link.setAttribute('download', `${'字典数据'}.xlsx`);
        document.body.appendChild(link);
        link.click();
        document.body.removeChild(link);
      });

      // 原文链接：https://blog.csdn.net/w574951402/article/details/121181824
      // window.location.href = 'http://localhost:8202/admin/cmn/dict/exportData';
    },
    //数据字典列表
    getDictList(id) {
      dict.dictList(id).then(response => {
        this.list = response.data;
      });
    },
    getChildrens(tree, treeNode, resolve) {
      dict.dictList(tree.id).then(response => {
        resolve(response.data);
      });
    }
  }
};
</script>
